Mexican federal police cordon off a street south of the border wall prototypes in the Magisterial neighborhood of Tijuana, Mexico in anticipation of President Trump's visit to the area Tuesday. Omar Ornelas/The Desert Sun

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A Mexican Federal policeman keeps an eye on members of the press as President Trump makes a visit to survey the eight border wall prototypes on March 13, 2018. Omar Ornelas/The Desert Sun

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Border Angels, a pro-immigrant organization, arrives at the Magisterial neighborhood in Tijuana, Mexico as President Trump makes a visit to survey the eight border wall prototypes on the side of the U.S. on March 13, 2018. In the background, U.S. military take positions looking into Mexico. Omar Ornelas/The Desert Sun

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Border Angels, a pro-immigrant organization, arrives at the Magisterial neighborhood in Tijuana, Mexico as President Trump makes a visit to survey the eight border wall prototypes on the side of the U.S. March 13, 2018. In the background, U.S. military take positions looking into Mexico. Omar Ornelas/The Desert Sun

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U.S. and Mexican press members position themselves on a roof to get cover President Trump visit to survey the eight border wall prototypes on March 13, 2018 in San Diego County. Omar Ornelas/The Desert Sun

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U.S. military take position looking into Mexico as President Trump makes a visit to survey the eight border wall prototypes on March 13, 2018 in San Diego Country. In the background, one of the prototypes can be seen. Omar Ornelas/The Desert Sun

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Mexican federal police cordon off a street south of the border wall prototypes in the Magisterial neighborhood of Tijuana, Mexico in anticipation of President Trump's visit to the area Tuesday. Omar Ornelas/The Desert Sun

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A U.S. consulate envoy arrives to discuss joint efforts to provide security on Mexican territory as President Trump makes a visit to survey the eight border wall prototypes on March 13, 2018. Omar Ornelas/The Desert Sun

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A U.S. consulate envoy looks through a hole on the border wall from Mexican territory as President Trump makes a visit to survey the eight border wall prototypes on March 13, 2018. Omar Ornelas/The Desert Sun

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About 40 people from the Hotel del Migrante Deportado, a hotel for deported migrants, protest by the border fence Tuesday. They chant: "We don't want the wall," in Spanish, ahead of the president's visit to California. Rebecca Plevin/The Desert Sun

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Mexicans make go about their daily routine through heavy police presence in the Magisterial neighborhood of Tijuana as President Trump makes a visit to survey the eight border wall prototypes on March 13, 2018. Omar Ornelas/The Desert Sun

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President Trump's motorcade arrives to survey the eight border wall prototypes in San Diego County on March 13, 2018. Omar Ornelas/The Desert Sun

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Border Angels, a pro-immigrant organization, hangs posters in support of migrants in the Magisterial neighborhood in Tijuana, Mexico as President Trump makes a visit to survey the eight border wall prototypes on the side of the U.S. on March 13, 2018. In the background, U.S. military take positions looking into Mexico. Omar Ornelas/The Desert Sun

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Daniel Watman, an American citizen living in Tijuana, is calling for parks instead of walls. "The separation results in people not getting to know each other.". Rebecca Plevin/The Desert Sun

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Border Angels, a pro-immigrant organization, arrives at the Magisterial neighborhood in Tijuana, Mexico as President Trump makes a visit to survey the eight border wall prototypes on the side of the U.S. on March 13, 2018. In the background, U.S. military take positions looking into Mexico. Omar Ornelas/The Desert Sun

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Border Angels, a pro-immigrant organization, arrives at the Magisterial neighborhood in Tijuana, Mexico as President Trump makes a visit to survey the eight border wall prototypes on the side of the U.S. on March 13, 2018. Omar Ornelas/The Desert Sun

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Border Angels, a pro-immigrant organization, arrives at the Magisterial neighborhood in Tijuana, Mexico as President Trump makes a visit to survey the eight border wall prototypes on the side of the U.S. on March 13, 2018. In the background, U.S. military take positions looking into Mexico. Omar Ornelas/The Desert Sun

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The border wall prototypes can be seen through the existing border wall from the Tijuana side. Border Patrol vans and other federal law enforcement are also present preparing for President Trump's visit Tuesday. Rebecca Plevin/The Desert Sun

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A security vehicle takes position looking into Mexico as President Trump's motorcade arrives to survey the eight border wall prototypes in San Diego County on March 13, 2018. Omar Ornelas/The Desert Sun

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A Mexican Federal policemen provide security on Mexican territory as President Trump makes a visit to survey the eight border wall prototypes on March 13, 2018. Omar Ornelas/The Desert Sun

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U.S. security are seen through a hole in the border wall through Mexico as President Trump makes a visit to survey the eight border wall prototypes on March 13, 2018. Omar Ornelas/The Desert Sun

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A dog walks past the border wall as a journalist takes video through a hole in the border wall during President Trump visit to survey the eight border wall prototypes on March 13, 2018 in San Diego Country. Omar Ornelas/The Desert Sun